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GHSA-p493-635q-r6gr

Remote code execution via the `pretty` option.

Source: GitHub Advisory Database (reviewed) Moderate CVE-2021-21353

Packages

EcosystemPackageAffectedFixed in
npm pug < 3.0.1 3.0.1
npm pug-code-gen < 2.0.3 2.0.3
npm pug-code-gen >= 3.0.0, < 3.0.2 3.0.2

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact If a remote attacker was able to control the `pretty` option of the pug compiler, e.g. if you spread a user provided object such as the query parameters of a request into the pug template inputs, it was possible for them to achieve remote code execution on the node.js backend. ### Patches Upgrade to `[email protected]` or `[email protected]` or `[email protected]`, which correctly sanitise the parameter. ### Workarounds If there is no way for un-trusted input to be passed to pug as the `pretty` option, e.g. if you compile templates in advance before applying user input to them, you do not need to upgrade. ### References Original report: https://github.com/pugjs/pug/issues/3312 ### For more information If you believe you have found other vulnerabilities, please **DO NOT** open an issue. Instead, you can follow the instructions in our [Security Policy](https://github.com/pugjs/pug/blob/master/SECURITY.md)

References

External links from the advisory. They lead to third-party sites.